Evaluate the following chemical equations selecting the corr…

Evaluate the following chemical equations selecting the correct grouping.  Balanced equations are marked with a T and unbalanced equations are marked with an F. (a)   2Fe(s) + O2 (g) → Fe2O3 (s)(b)  8Fe(s) + 3O2 (g) → 4Fe2O3 (s)(c)   4Fe(s) + 3O2 (g) → 2Fe2O3 (s)(d)  4Fe(s) + 2O2 (g) → 2Fe2O3 (s)